Ar-Rabi' ibn al-Hasan said, "I went with al-Hasan to visit Qatada.
He sat by his head and asked after him and made supplication for him. He
said, 'O Allah, heal his heart and cure him of his illness!"
Ibn 'Abbas said, "When the Prophet, may Allah bless him and grant
him peace, visited a sick person, he would sit by his head and then say
seven times, 'I ask Allah the Immense, the Lord of the Immense Throne,
to cure you.' If the time of the invalid had not yet come, he would be
cured of his pain."
Abu Umama reported that the Prophet, may Allah bless him and grant
him peace, said, "Allah says, 'O son of Adam, when I take what is precious
from you and you are steadfast in the face of the blow and reckon that
your reward is with Allah, the only reward which I am content for you to
have is the Garden."
Anas said, "I heard the Prophet, may Allah bless him and grant
him peace, say that Allah Almighty said, 'When I test him in his two precious
ones (i.e. his eyes) and he is steadfast, I will repay him with the Garden.'"